you missed the point S_isale, it's not about picking on others, it's about spreading awareness. no need to get defensive. it is a fact that marrying within family bears a huge risk of genetic disorders.
My best friend's parents were first cousins... by the age of 30 he had diabetes and a brain tumour.
It's just unfair on the children to suffer. but we all know it's hard to discuss old traditions like this one. People find it hard to challenge things they take for granted.